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#!/bin/bash
set -e
tmpfile=$(mktemp)
if [ ! -w $tmpfile ] ; then
echo "Failed to create tmp file" >&2
exit 0
fi
trap "rm -rf $tmpfile" EXIT # cleanup if aborted
RULESET="include \"$tmpfile\""
echo "$RULESET" > $tmpfile
$NFT -f $tmpfile 2>/dev/null || exit 0
echo "E: endless include loop" >&2
exit 1
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